Elasmobranquios (tiburones y rayas) (sharks and rays) >
Rajiformes (Skates and rays) >
Rajidae (Skates)
Etymology: Leucoraja: Greek, leykos = white + Latin, raja = a fish, Raja sp. (Ref. 45335).
More on author: Mitchill.
Entorno: milieu / zona climática / rango de profundidad / gama de distribución
Ecología
marino demersal; oceanodromo (Ref. 51243); rango de profundidad 10 - 914 m (Ref. 106604). Temperate; 52°N - 35°N, 78°W - 52°W
Northwest Atlantic: from northern North Carolina, USA to Gulf of St. Lawrence, Newfoundland and St Pierre Miquelon.
Longitud en la primera madurez / Tamaño / Peso / Edad
Madurez: Lm 37.5, range 32 - 43 cm
Max length : 62.0 cm TL macho / no sexado; (Ref. 106604); edad máxima reportada: 12 años (Ref. 88929)
Usually on sandy or gravelly bottoms from shoal waters to 90 m depth (Ref. 7251), with temperature range of 1.2-21°C. Benthic (Ref. 5951). Mostly inactive during daylight, but active under dark conditions (Ref. 10807). Feeds on bottom-dwelling organisms such as crabs, shrimps, polychaetes, sea squirts, mollusks, squids and bony fishes (Ref. 27549). Oviparous. Distinct pairing with embrace. Young may tend to follow large objects, such as their mother (Ref. 205). Eggs are oblong capsules with stiff pointed horns at the corners deposited in sandy or muddy flats (Ref. 205). Egg capsules are 4.6-6.3 cm long and 2.7-4.8 cm wide, about 10-35 eggs are laid annually (Ref. 41250). Possesses an electric organ located in the tail region (Ref. 10807). Electric organ discharge (EOD) activity is intermittent (Ref. 10011) and seemed more frequent during dark periods (Ref. 10808). The individual EOD of this species is monophasic, head-negative, and lasts 70 ms (Ref. 10011).
Oviparous, paired eggs are laid. Embryos feed solely on yolk (Ref. 50449). Distinct pairing with embrace. Young may tend to follow large objects, such as their mother (Ref. 205).
McEachran, J.D. and K.A. Dunn, 1998. Phylogenetic analysis of skates, a morphologically conservative clade of elasmobranchs (Chondrichthyes: Rajidae). Copeia 1998(2):271-290. (Ref. 27314)
Situación en la Lista Roja de la UICN (Ref. 130435: Version 2025-2 (Global))
Amenaza para el ser humano
Harmless
Usos humanos
Pesquerías: escaso valor comercial
Herramientas
Informes especiales
Descargar XML
Fuentes de Internet
Estimaciones basadas en modelos
Índice de diversidad filogenética (Referencia 82804) |
PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high]. |
|
Bayesian length-weight
|
a=0.00282 (0.00248 - 0.00320), b=3.22 (3.19 - 3.25), in cm total length, based on LWR estimates for this species (Ref. 93245). |
Nivel trófico (Referencia 69278) |
3.6 ±0.1 se; based on diet studies. |
Resiliencia (Referencia 120179) |
Bajo, población duplicada en un tiempo mínimo de 4.5-14 años (K=0.29-0.35; tm=4.5; Fec=10; tmax=12). |
|
Rate of population increase |
Prior r = 0.09, 95% CL = 0.06 - 0.14, Based on 1 full stock assessment. |
Vulnerabilidad pesquera (Ref. 59153) |
Moderate to high vulnerability (50 of 100). 🛈 |
Vulnerabilidad climática (Ref. 125649) |
Very high vulnerability (90 of 100). 🛈 |
Categoría de precios (Ref. 80766) |
Low.
|
Nutrientes (Ref. 124155) |
Calcium = 8.66 [1.21, 152.16] mg/100g; Iron = 0.286 [0.027, 3.412] mg/100g; Protein = 15.9 [13.9, 17.9] %; Omega3 = 0.79 [0.34, 1.99] g/100g; Selenium = 11.9 [2.5, 63.8] μg/100g; VitaminA = 6.64 [0.51, 72.57] μg/100g; Zinc = 0.394 [0.028, 4.300] mg/100g (wet weight); |